Question

我想使用bcrypt哈希密码，然后验证提供的密码是否正确。

哈希密码很简单：

import bcrypt

password = u'foobar'
password_hashed = bcrypt.hashpw(password, bcrypt.gensalt())

# then store password_hashed in a database

如何将纯文本密码与存储的哈希值进行比较？

Answer 1

使用py-bcrypt，您不需要单独存储盐：bcrypt将盐存储在哈希中。

您可以简单地将哈希用作salt，并将salt存储在哈希的开头。

>>> import bcrypt
>>> salt = bcrypt.gensalt()
>>> hashed = bcrypt.hashpw('secret', salt)
>>> hashed.find(salt)
0
>>> hashed == bcrypt.hashpw('secret', hashed)
True
>>>

Answer 2

文档中没有提到存储盐，它说你必须：

#Initial generation
hashed = bcrypt.hashpw(password, bcrypt.gensalt())
#Store hashed in your db

#Load hashed from the db and check the provided password
if bcrypt.hashpw(password, hashed) == hashed:
    print "It matches"
else:
    print "It does not match"

http://www.mindrot.org/projects/py-bcrypt/

Answer 3

稍后，假设您有一个用户输入密码user_pass。你也要哈希，然后将哈希与存储的哈希进行比较，如果它们匹配，那么原始密码也匹配。

请注意，bcrypt会自动将salt值存储为散列密码的一部分，以便您在散列未来输入时也可以使用它。

第一次：

import bcrypt

password = u'foobar'
salt = bcrypt.gensalt()
password_hashed = bcrypt.hashpw(password, salt)

# store 'password_hashed' in a database of your choosing

以后：

import bcrypt
password = something_that_gets_input()

stored_hash = something_that_gets_this_from_the_db()

if bcrypt.hashpw(password, stored_hash) == stored_hash:
    # password matches

Answer 4

我不熟悉Python，但我认为你可以使用：
public static boolean checkpw(java.lang.String plaintext, java.lang.String hashed)

# Check that an unencrypted password matches one that has  
# previously been hashed.
if bcrypt.checkpw(plaintext, hashed):
    print "It matches"
else:
    print "It does not match"

Answer 5

我认为这个会更好：

for i in range(len(rserver.keys())):
    salt = bcrypt.gensalt(12)
    
    mdp_hash = rserver.get(rserver.keys()[i])
    rserver.set(rserver.keys()[i], bcrypt.hashpw(mdp_hash.encode(),bcrypt.gensalt(12) ))

    rsalt.set(rserver.keys()[i], salt)

如何使用bcrypt将纯文本密码与散列密码进行比较？

5 个答案: